CVE-2025-37828 [Medium] | Security Vulnerability in Linux Kernel

In the Linux kernel, the following vulnerability has been resolved: scsi: ufs: mcq: Add NULL check in ufshcd_mcq_abort() A race can occur between the MCQ completion path and the abort handler: once a request completes, __blk_mq_free_request() sets rq->mq_hctx to NULL, meaning the subsequent ufshcd_mcq_req_to_hwq() call in ufshcd_mcq_abort() can return a NULL pointer. If this NULL pointer is dereferenced, the kernel will crash. Add a NULL check for the returned hwq pointer. If hwq is NULL, log an error and return FAILED, preventing a potential NULL-pointer dereference. As suggested by Bart, the ufshcd_cmd_inflight() check is removed. This is similar to the fix in commit 74736103fb41 ("scsi: ufs: core: Fix ufshcd_abort_one racing issue"). This is found by our static analysis tool KNighter.

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-03-04	0.02%	0.07%	+0.05%
2	2025-05-08	—	0.02%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-03-04

0.02%

0.07%

+0.05%

2025-05-08

—

0.02%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
5.5	3.1	MEDIUM	`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H` Click to expand Attack vector (AV:L) They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by. Attack complexity (AC:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. Privileges required (PR:L) A normal user session is enough; they don’t have to be admin. User interaction (UI:N) Nobody has to click “OK” or open a trap file; it can work without a victim helping. Scope (S:U) Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems. Confidentiality (C:N) Doesn’t really leak secrets in a meaningful way. Integrity (I:N) Data isn’t meaningfully altered or forged. Availability (A:H) Could take the service down hard or make it unusable for people who depend on it.	1.8	3.6	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

5.5

3.1

MEDIUM

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H Click to expand

Attack vector (AV:L): They already need access on the box, or another person has to do something wrong; it’s not a remote drive-by.
Attack complexity (AC:L): Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:L): A normal user session is enough; they don’t have to be admin.
User interaction (UI:N): Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U): Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N): Doesn’t really leak secrets in a meaningful way.
Integrity (I:N): Data isn’t meaningfully altered or forged.
Availability (A:H): Could take the service down hard or make it unusable for people who depend on it.

1.8

3.6

[email protected]

OS Trackers for CVE-2025-37828

vendor	priority	summary	link
`debian`	unimportant	CVE-2025-37828 unimportant priority: Debian including 1 source packages (linux), 5 status rows across 5 suites (bookworm, bullseye, forky, sid, trixie): resolved 5.	https://security-tracker.debian.org/tracker/CVE-2025-37828
`redhat`	medium	—	https://access.redhat.com/security/cve/CVE-2025-37828
`suse`	medium	CVE-2025-37828 severity moderate: SUSE including 52 source package names (cluster-md-kmp-default, dlm-kmp-default, …), 243 product×package rows across 46 product lines (SLES-LTSS-TERADATA 15 SP2, SUSE Linux Enterprise High Availability Extension 15 SP7, … (46 product lines)): Known Not Affected 217, Fixed 26.	https://www.suse.com/security/cve/CVE-2025-37828/
`ubuntu`	medium	CVE-2025-37828 medium priority: Ubuntu including 158 source packages (linux, linux-allwinner-5.19, …), 1551 status rows across 10 suites (bionic, focal, jammy, noble, oracular, plucky, questing, trusty, upstream, xenial): DNE 1145, ignored 164, released 132, not-affected 105, needed 2, needs-triage 2, pending 1.	https://ubuntu.com/security/CVE-2025-37828

Affected software / configurations for CVE-2025-37828

Vendor	Product	Version	Raw CPE
linux	linux_kernel	>= 6.5, < 6.6.89	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 6.7, < 6.12.26	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	>= 6.13, < 6.14.5	cpe:2.3:o:linux:linux_kernel::::::::
linux	linux_kernel	6.15	cpe:2.3:o:linux:linux_kernel:6.15:rc1::::::
linux	linux_kernel	6.15	cpe:2.3:o:linux:linux_kernel:6.15:rc2::::::
linux	linux_kernel	6.15	cpe:2.3:o:linux:linux_kernel:6.15:rc3::::::

References for CVE-2025-37828

URL	Tags
https://git.kernel.org/stable/c/47eec518aef3814f64a5da43df81bdd74d8c0041	Patch
https://git.kernel.org/stable/c/4c324085062919d4e21c69e5e78456dcec0052fe	Patch
https://git.kernel.org/stable/c/7d002f591486f5ef4bc02eb02025a53f931f0eb5	Patch
https://git.kernel.org/stable/c/d6979fabe812a168d5053e5a41d5a2e9b8afd7bf	Patch

URL

CVE-2025-37828 | scsi: ufs: mcq: Add NULL check in ufshcd_mcq_abort()

Exploit prediction scoring system (EPSS) score for CVE-2025-37828

Common vulnerability scoring system (CVSS) metrics for CVE-2025-37828

Weakness enumeration for CVE-2025-37828

OS Trackers for CVE-2025-37828

Affected software / configurations for CVE-2025-37828

References for CVE-2025-37828